open endopen end classoperating functionoperational characteristic curveoperations researchoperatoropinion pollopinion poolsoptical illusions in chartsoptimal allpcationoptimal block designoptimal c testoptimal controloptimal sample sizeoptimal samplingoptimal spacingoptimal stochastic controloptimal stopping ruleoptimalityoptimizationoptimum allocationoptimum design of experimentsoptimum error rateoptimum stratificationoptional samplingoptions setorbitord carver system of distributionsorderorder of biasorder of stationarityorder restrictedorder restricted inferenceorder statisticsorderedordered alternativeordered arrayordered n tupleordered tripleorderingordering distributions by dispersionordering procedureordinalordinal dataordinal scaleordinal variablesordinary discontinuityordinary least squaresornstein uhlenbeck processorthant
